Gas-furnace.



No. 685,539. Patented Oct. 29, I91".

W. SWINDE'LL.

GAS FURNACE.

(Application filed Mar. 30, 1899.) (No Madel.) 2 Sheets-Sheet I.

FIGJ.

THE Norms FEYERS cc. PHOTQLflhO wnsnmmon. o. c.

No. 685,539. Patented Oct. 29, mm.

w. SWINDELL.

GAS FURNACE.

(Application filed Max. 80, 1899.) (No Model.) 2 Sheets-Sheet 2.

WITNESSES:

UNITED STATES I PATENT OFFICE.

WILLIAM SWINDELL, OF ALLEGHENY, PENNSYLVANIA.

GAS-FURNACE.

SPECIFICATION forming part of Letters Patent No. 685,539, dated October 29, 1901.

. Application filed March 30,1899. Serial No. 711,069. (No model.)

To aZZ whom it may concern: Be it known that I, WILLIAM SWINDELL, o Allegheny, in the county of Allegheny and State of Pennsylvania, have invented'a cer- 5 tain new and useful Improvementin Gas-Furnaces, of which improvement the following is a specification.

The object of my invention is to provide simple and inexpensive means whereby the to combustion of a mixture of gas and heated air may be effectively and economically utilized in heating a furnace-chamber.

To this end my invention, generally stated, consists in the combination of a source of gas-supply, a source of heated-air supply, a

mixingchamber, a furnace or combustion chamber communicating therewith, an air supply flue leading from the air-supply source to the mixing-chamber, and a gas-flue leading from the gas-supply source to the mixingchamber.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure 1' is a vertical transverse section through an apparatus embodying my invention at the line Ct at of Fig. 4; Fig. 2, a similar section at the line Z7 b of Fig. 4; Fig. 3, a vertical longitudinal section at the line 0 c of Fig. 4., and

0 Fig. 4 a horizontal sectionat the line (Z d of Fig. 3.

In the practice of my invention I provide a source of gas-supply,which is preferably, as shown, a gas-producer of any suitable and approved construction, one or more of which the instance exemplified the source of heatedair supply is an air-heating chamber com posed of two superposed sections 7 8, surrounding the generating-chamber or fuelchamber 1 of a gas-producer, connected with air-inlet passages 12 and connected one with the other by ports let. The air-heating chambers 7 8 of the gas-producers shown accord in all substantial particulars of construction and relation to the gas-producers with that set forth in an application for Letters Patent filed by me under date of March 21, 1899, Serial No. 709,958, and not being in and of themselves claimed as of my present invention need not be herein fully and at length set forth. I

A mixing-chamber 27, which is preferably of substantially rectangular cross-section,-extends from a point adjacent to the sources of gas and air supply to a furnace or combustion chamber 28, with which it is in open communication at its outer or farther end. The furnace-chamber is provided with a suitable exit or waste flue 29 andis, in the specitic embodiment of my invention herein shown, an inclined drum or barrel adapted for drying material used in the manufacture of cement. The material to be dried is supplied to the chamber28 through a feed-opening 30 at the end adjacent to the exit-flue 29, and the dried material is discharged through a downwardly-extending deliverypassage 31 at or near the end which adjoins the mixingchamber. It \vill,however,be obvious to those skilled in the art that the furnace or con1bus= tion chamber 28 may Without departure from the spirit of my invention be located either horizontally or vertically and be of any known and preferred form and construction.

An air-flue 24 leads from the source of heated-air supply, or one from each ofsaidsources. when two or more are employed, into the mixing-chamber 27, and a'gas-flue 23 leads from the source of gas-supply, or one from each of said sources when two or more are employed, into the mixing-chamber. The gas due or lines may, if desired, communicate with the mixing chamber 27 bya single opening or passage; but such communication is preferably, as shown, eifected through a plurality of mixing-ports 25, formed in the wall of the gas flue or lines adjacent to the terminal thereof in the mixing chamber.

Communication between the gas-producers and the gas-fines 23 is controlled by suitable valves, the gas-outlets 6 in the construction shown leading, into valve-chambers 6, from which ports 6 lead to the respective gasflues 23. The openings of the gas-outlets 6 are governed by lift or puppet valves 6 and those of the ports 6 by slide-valves 6.

I claim as my invention and desire to secure by Letters Patent-- 1. The combination of a gas-producingfurnace having an air-heating chamber formed in its walls, with a mixing-chamber and a combustion-chamber, and adjacent conduits conducting the hot gas and hot air to said mixing-chamber.

2. The combination of agas-produci ng fu rnace having an air-heating chamber formed in its Walls, with a mixing-chamber, separate but adjacent conduits leading from the fur- I mace and air-heating chambers respectively to the mixing-chamber, and a combustion- IO chamber in the form of a revolving drum opening into said mixing-chamber.

WILLIAM SWINDELL. Witnesses:

J. SNOWDEN BELL, CLARENCE A. WILLIAMS. 

